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基于紫外或蓝光LED激发的Eu^3＋和Bi^3＋共掺杂LaMgB5O10红色荧光粉
  • ISSN号：1000-7032
  • 期刊名称：《发光学报》
  • 时间：0
  • 分类：O482.31[理学—固体物理;理学—物理]
  • 作者机构：[1]大连海事大学物理系,辽宁大连111026
  • 相关基金：国家自然科学基金（61078061,11104023,11104024）; 中央高校基本科研业务费专项基金（2011JC037,2011JC036,2011ZD032,2011ZD033）资助项目
作者： 张金苏[1], 梁左秋[1], 仲海洋[1], 孙佳石[1], 程丽红[1], 李香萍[1], 陈宝玖[1]
关键词： LaMgB5O10, JUDD-OFELT理论, 荧光增强, LaMgB5O10, Judd-ofelt theory, enhanced red photoluminescence
中文摘要：

采用固相法合成了Eu3＋和Bi3＋共掺杂的LaMgB5O10红色荧光粉,在紫外或蓝光激发下,样品的红光强度随着Bi2O3的增加而增强。利用X射线衍射对样品的结构进行了分析,结果表明,掺入Bi2O3后,样品的结晶度更好。根据Judd-Ofelt理论计算,得到样品的内量子效率不随掺杂剂的改变而变化,约为43%。在394nm激发下,Eu3＋和Bi3＋共掺杂样品的红色荧光强度较Eu3＋单掺杂样品中增强了50%。根据漫反射和变温光谱测量结果,分析指出Eu3＋红色荧光增强是由于Eu3＋的吸收增强。

英文摘要：

Red phosphors of Eu3＋ and Bi3＋ single-and double-doped LaMgB5O10 have been synthesized by a solid-state reaction.The red emission intensities were enhanced with the increase of Bi2O3 content.The crystal structures were analyzed using the X-ray diffraction.It indicated that the crystallization is better in the codoped samples than the Eu3＋ monodoped sample.According to the results calculated by the Judd-Ofelt theory,the internal quantum efficiencies keep a constant value of about 43%.Moreover,red emission intensity increase 50% in the codoped sample comparison with the Eu3＋ monodoped one under 394 nm excitation.It was confirmed that the enhanced red photoluminescence is due to the increase of Eu3＋absorption strengths.

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期刊信息
  • 《发光学报》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会发光分会 中国科学院长春光学精密机械与物理研究所
  • 主编：申德振
  • 地址：长春市东南湖大路3888号
  • 邮编：130033
  • 邮箱：fgxbt@126.com
  • 电话：0431-86176862
  • 国际标准刊号：ISSN：1000-7032
  • 国内统一刊号：ISSN：22-1116/O4
  • 邮发代号:12-312
  • 获奖情况:
  • 物理学类核心期刊,2000年获中国科学院优秀期刊二等奖,中国期刊方阵“双效”期刊
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:7320